" 13.) "int(dx)/(1+e^(2x))

int(dx)/(sqrt(e^(2x)-1))=

" (6) "int(e^(2x))/(e^(2x)+1)dx

Ecaluate the following: (i) int(sec^(2)x)/(3+tanx)dx " (ii) " int(e^(x)-e^(-x))/(e^(x)+e^(-x))dx (iii) int(1-tanx)/(1+tanx)dx " (iv) " int(1)/(1+e^(-x))dx

Evaluate the following: (i) int(sec^(2)x)/(3+tanx)dx " (ii) " int(e^(x)-e^(-x))/(e^(x)+e^(-x))dx (iii) int(1-tanx)/(1+tanx)dx " (iv) " int(1)/(1+e^(-x))dx

Ecaluate the following: (i) int(sec^(2)x)/(3+tanx)dx " (ii) " int(e^(x)-e^(-x))/(e^(x)+e^(-x))dx (iii) int(1-tanx)/(1+tanx)dx " (iv) " int(1)/(1+e^(-x))dx

int(e^(2x))/(1+e^(2x))dx=

int_(-1)^(1)e^(2x)dx

int(e^(2x))/(1+e^(x))dx

int(e^(2x))/(e^(x)+1)dx